Finding the Fourth Proportional to 122,900.69, 184,351.62 and 42,938.31

Step by Step Solution

1. Step 1: Write the proportion equation
   122,900.69 : 184,351.62 = 42,938.31 : x
2. Step 2: Convert to fraction form
   122,900.69/184,351.62 = 42,938.31/x
3. Step 3: Cross multiply
   122,900.69x = 184,351.62 × 42,938.31
4. Step 4: Simplify right side
   122,900.69x = 7,915,747,008.56
5. Step 5: Solve for x
   x = 7,915,747,008.56/122,900.69
6. Step 6: Final answer
   x = 64,407.67